General

  • Target

    99bae4effd7113b7decd48c23ea5cc6626a9b4f222ec9ad862d00a5a03cbb498N.exe

  • Size

    1.0MB

  • Sample

    241202-f4m15axjal

  • MD5

    80de5279605dda35d99f32d926d6d600

  • SHA1

    4126656e487d6e427a7e279dcae123a36906e2ea

  • SHA256

    99bae4effd7113b7decd48c23ea5cc6626a9b4f222ec9ad862d00a5a03cbb498

  • SHA512

    e328d7e90b57b081a771e969a25cc7f9ec91d62c5ef716bef71861b2dda70779c906f7c76d0403deba25e0650b27467ab719a411c90b4f9f66ef230eb1d7a990

  • SSDEEP

    12288:sP2N7DeTXX5qeIeLsdxv/xedn6IwyMbfhC6hQs3uUbG6ddD7HFPMmXgAff+75LMS:sP28z7IeYxvJeKHdZH3OacV3d9CE

Malware Config

Targets

    • Target

      99bae4effd7113b7decd48c23ea5cc6626a9b4f222ec9ad862d00a5a03cbb498N.exe

    • Size

      1.0MB

    • MD5

      80de5279605dda35d99f32d926d6d600

    • SHA1

      4126656e487d6e427a7e279dcae123a36906e2ea

    • SHA256

      99bae4effd7113b7decd48c23ea5cc6626a9b4f222ec9ad862d00a5a03cbb498

    • SHA512

      e328d7e90b57b081a771e969a25cc7f9ec91d62c5ef716bef71861b2dda70779c906f7c76d0403deba25e0650b27467ab719a411c90b4f9f66ef230eb1d7a990

    • SSDEEP

      12288:sP2N7DeTXX5qeIeLsdxv/xedn6IwyMbfhC6hQs3uUbG6ddD7HFPMmXgAff+75LMS:sP28z7IeYxvJeKHdZH3OacV3d9CE

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Dcrat family

    • Modifies WinLogon for persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • UAC bypass

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Adds Run key to start application

    • Checks whether UAC is enabled

MITRE ATT&CK Enterprise v15

Tasks